What is a good all around high quality speaker to purchase?

… and the Tannoy cabinets are like a work of art.

I would also think about the floor standing PS audio speakers.  It would make sense that they pair well with your equipment.

audiotroy - Legacy Audio speakers were my grail 25 years ago.  I heard the Whisper speakers at a demo in Houston and they were the best sounding speakers I've ever heard.

One overlooked piece of the puzzle is how well the components play with each other.  Brightly voiced speakers (like your B&Ws) driven by transistor preamps and amps can be harsh and glaring.  Smooth-voiced speakers like Sonus match better with transistors.

Alternatively; the McIntosh tube products are voiced much like the Sonus and together sound muted and mushy (sorry, just my opinion).  However I have heard Macs driving Maggies and it was remarkably good- and I'm no fan of Macs. 

So the above wasn't a direct answer to your question. Here's mine: Go to a HiFi shop or a HiFi club nearby, or to a friend's house that has good gear and give your ears the right to vote. Match strength to weakness to balance out your sound. Don't forget your listening room's demands. This will color your sound as well. 

for floor standers the Monitor Audio line is sadly overlooked too frequently despite excellent engineering in drivers and crossover design.

Revel is also an excellent performer with a natural clear sound and wide listening area comparable to Magico's.

Only true high performance faithful reproduction audio speaker is Wavetouch audio Antero speaker. All other speakers in the world behave/sound like the left speaker in below. These un-natural sound speakers sound veiled, bright, and distorted. And one way to enjoy these speakers is immersive sound-stage (a trick by combi of ears, eyes, and brain). But hearing immersive sounds too long isn’t healthy for your body and brain. Only speaker behave like the right speaker (natural sound) in below (closest to the original music) is Wavetouch Anteros. Test your speakers saying "hello" (or anything) while your speaker is playing.  Alex/Wavetouch

https://youtu.be/IHf_FSa8amE?si=dadAt3BbbbrV9jG7

Wavetouch Antero

https://youtu.be/6_Pd65RVCR4?si=fW9s1VuOmNv3fUyE